--- parser3/src/include/pa_pool.h	2001/01/26 14:47:52	1.1
+++ parser3/src/include/pa_pool.h	2003/02/19 16:19:00	1.86.2.30
@@ -1,96 +1,199 @@
-/*
+/** @file
+	Parser: Parser: reference counting classes decls.
 
-	String				Chunk0
-	======				========
-	head_chunk--------->[ptr, size]
-	append_here-------->[ptr, size]
-	chunk_link_row      ........
-			.			.
-			.			[ptr, size]
-			...........>[link to the next chunk]
+	Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
 
+	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
 */
 
 #ifndef PA_POOL_H
 #define PA_POOL_H
 
-#include <stddef.h>
+static const char* IDENT_POOL_H="$Date: 2003/02/19 16:19:00 $";
 
-class Pool;
+// include
 
-class String {
-	friend Pool;
+#include "pa_config_includes.h"
 
-	// the pool I'm allocated on
-	Pool *pool;
-
-	// the number of records per chunk
-	int chunk_items;
-	enum {
-		CI_CONST_STRING_GROW=5,
-		CI_DYNAMIC_STRING_GROW_DEFAULT=10
-	};
+#ifdef XML
+#	include "gdome.h"
+// for xmlChar
+#	include "libxml/tree.h"
+#endif
 
-	struct Chunk {
-		union Row {
-			// chunk item
-			struct {
-				char *ptr;  // pointer to the start of string fragment
-				size_t size;  // length of the fragment
-			} item;
-			Chunk *link;  // link to the next chunk in chain
-		} first;
-		// next rows are here
-	}
-		*head_chunk;  // the head chunk of the chunk chain
-
-	// next append would write to this record
-	Chunk::Row *append_here;
-	
-	// the address of place where lies address 
-	// of the link to the next chunk to allocate
-	Chunk::Row *chunk_link_row;
-
-	// new&constructors made private to enforce factory manufacturing at pool
-	void *operator new(size_t size, Pool *apool);
-
-	void construct(Pool *apool, int achunk_items);
-	String(Pool *apool, int achunk_items=CI_DYNAMIC_STRING_GROW_DEFAULT) { 
-		construct(apool, achunk_items); 
-	}
-	String(Pool *apool, char *src) {
-		construct(apool, CI_CONST_STRING_GROW);
-		*this+=src;
-	}
+// forwards
 
-	bool chunk_is_full() {
-		return append_here == chunk_link_row;
-	}
-	void expand();
+void *pa_malloc(size_t size);
+void *pa_calloc(size_t size);
+void pa_free(void *ptr);
+void *pa_realloc(void *ptr, size_t size);
+
+class Exception;
+class String;
+class Charset;
+class GdomeDOMString_auto_ptr;
 
+template<typename T> class object_ptr {
+	T *ptr;
 public:
+	typedef T element_type;
 
-	size_t size();
-	char *c_str();
-	String& operator += (char *src);
+	explicit object_ptr(T *ptr = 0) {
+		this->ptr=ptr;
+		if(ptr)
+			ptr->ref();
+	}
+	template<class B> object_ptr(const object_ptr<B>& src) {
+		this->ptr=src.get();
+		if(ptr)
+			ptr->ref();
+	}
+	object_ptr(const object_ptr<T>& src) {
+		ptr=src.get();
+		if(ptr)
+			ptr->ref();
+	}
+	object_ptr(T *ptr, int) {
+		this->ptr=ptr;
+	}
+   object_ptr<T>& operator=(const object_ptr<T>& src) {
+		if(this!=&src)
+			if(ptr!=src.get()) {
+				if(ptr)
+					ptr->unref();
+				ptr=src.get();
+				if(ptr)
+					ptr->ref();
+			}
+		return *this;
+	}
+    ~object_ptr() {
+		if(ptr)
+			ptr->unref();
+	}
+    T& operator*() const {
+		return *get();
+	}
+    T *operator->() const {
+		return get();
+	}
+    T *get() const {
+		return ptr;
+	}
+	operator bool() const {
+		return get()!=0;
+	}
+	bool operator !() const {
+		return get()==0;
+	}
 };
 
-class Pool {
+#define DECLARE_OBJECT_PTR(name) \
+	typedef object_ptr<name> name##Ptr
+
+/// TEMPLATE CLASS smart_ptr, stolen  from stl:auto_ptr & renamed field/params [not compiled on gcc]
+template<class T>
+	class smart_ptr {
+	bool owns;
+	T *ptr;
 public:
-	Pool();
-	~Pool();
-    void *alloc(size_t size);
-    void *calloc(size_t size);
+	typedef T element_type;
+	explicit smart_ptr(T *aptr = 0)
+		: owns(aptr != 0), ptr(aptr) {}
+	smart_ptr(const smart_ptr<T>& src)
+		: owns(src.owns), ptr(src.release()) {}
+	smart_ptr<T>& operator=(const smart_ptr<T>& src)
+		{if (this != &src)
+			{if (ptr != src.get())
+				{if (owns)
+					delete ptr;
+				owns = src.owns; }
+			else if (src.owns)
+				owns = true;
+			ptr = src.release(); }
+		return (*this); }
+	~smart_ptr()
+		{if (owns)
+			delete ptr; }
+	T& operator*() const
+		{return (*get()); }
+	T *get() const
+		{return ptr; }
+	T *release() const
+		{((smart_ptr<T> *)this)->owns = false;
+		return (ptr); }
+	operator bool() const {
+		return get()!=0;
+	}
+	operator T*() const {
+		return ptr;
+	}
+	};
+
+// defines
+
+#define override
+#define rethrow throw
 
-	String *makeString() { 
-		return new(this) String(this);
+// memory
+
+inline void *operator new[] (size_t size) {
+	return pa_malloc(size);
+}
+inline void operator delete[] (void *ptr) {
+	pa_free(ptr);
+}
+inline void operator delete (void *ptr) {
+	pa_free(ptr);
+}
+
+class PA_Allocated {
+public:
+	/// the sole: instances allocated using our functions
+	static void *operator new(size_t size) { 
+		return pa_malloc(size);
+	}
+	static void operator delete(void *ptr) {
+		pa_free(ptr);
+	}
+	static void *malloc(size_t size) {
+		return pa_malloc(size);
+	}
+	static void *calloc(size_t size) {
+		return pa_calloc(size);
+	}
+	static void free(void *ptr) {
+		pa_free(ptr);
 	}
-	String *makeString(int chunk_items) {
-		return new(this) String(this, chunk_items);
+	static void *realloc(void *ptr, size_t size) {
+		return pa_realloc(ptr, size);
 	}
-	String *makeString(char *src) {
-		return new(this) String(this, src);
+
+};
+
+/** 
+	Base for all Parser classes, memory allocation/dallocation goes via pa_malloc/pa_free.
+*/
+class PA_Object: public PA_Allocated {
+	mutable unsigned long freferences;
+public:
+	PA_Object(): freferences(0) {}
+	virtual ~PA_Object() {}
+	 
+	void ref() const {
+		freferences++;
+	}
+	void unref() const {
+		if(freferences) {
+			if(--freferences==0)
+				delete this;
+		}
 	}
 };
+DECLARE_OBJECT_PTR(PA_Object);
+
+// convinient types
+
+typedef smart_ptr<char> CharPtr;
 
 #endif